Method of shaping metallic ingots by transverse rolling.



PATENTED APR. 18, 1905.

LQD. DAVIS. METHOD OF SHAPING METALLIC INGOTS BY TRANSVERSE ROLLING.

APPLICATION FILED SEPT. 3. 1901. v

2 SHEETSSHEET l.

UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

LEONARD D. DAVIS, -OF ERIE, PIEINJFISYLVANIA.

METHOD OF SHAPING METALLIC INGOTS BY TBANSVERSE ROLLING.

SPECIFICATION forminggpart of Letters Patent No. 787 612, dated April18, 1905.

I Application filed September 3,1901. Serial No. 74,169-

To all Mil b 0771, it may concern:

Be it known that 1, LEONARDD. DAvIs, a

Y citizen of the United States, residing at Erie, in

the county of Erie and State of Pennsylvania,

have invented certain new and useful Improvements in Methods orProcesses of Shaping Metallic Ingots by Transverse Rolling; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to the method or process ofshaping metallicingots by transverse rolling; and it consists in certain improvementstherein, as will be hereinafter fully described, and pointed out in theclaim.

Transverse rolling has been heretofore at-.'

tempted; but great difficulty has been encountered 1n employing itsuccessfully, because such rolling tends to rupture the center of theingot, and the extent of the rupture is soirregular asto make the resultunsatisfactory.

I have found that the disadvantages heretofore experienced in transverserolling may be overcome by. first piercing the ingot and then subjectingit to the transverse rolling process. The wall of the opening when sooperated upon remains intact, so that the nature of the finished productmay be safely relied upon. the ingot be produced by pressure rotativelyapplied with a feeding action of the ingot upon a mandrel. This is theordinary method of piercing ingots. Where the ingot is so pierced, thewalls of the opening are forged, so that they better sustain the rollingstrain than where the opening is cast in the ingot.

There is also a more preferable disposition of fiber in the metal.

This process is intended for transverse rolling in connection withingots as distinguished fromf transverse rolling tubing, properly socalled. I

I prefer that the opening through billet of a piercing-mill; Fig. 4, aside elevation of the same.

The transverse-rolling mill is provided with three rolls A A A and theingot B in place therein. The ingot is provided with the opening 6. Therolls are provided with the grooves a a and shoulders a a to give to theFig.

finished article the shape desired, the article shown being a car-axle.I

. Transverse rolllng 1s common; but I show the outlines of a millin'order that'my process may be better understood.

By transverse rolling I wish to be un-' derstood as referring to rollingwherein there is no axial movement of the billet.

In the piercing-mill shown in Figs. 3 and 4 C 0 mark the, disks, whichare common 1n piercing-mills, D the mandrel, and E the b11- let. Thebillet is fed through by the actlon of the rolls and is pierced, themandrel smoothing and compacting the walls of theopening formed. 5

What I claim as new is The method or process of shaping metallic ingots,which consists in first piercing the ingot, with a relatively smallopening and smoothing and compacting the walls of the opening so made,and then transversely rolling the ingot without axial movement of theingot so pierced for shaping its outer surface;

In testimony whereof I afiix my signature in presence of two witnesses.

LEONARD D. DAVIS. Witnesses:

H. C. LORD, GRACE E. YARD.

